A monitoring circuit includes a sensor circuit having a plurality of devices and a selection circuit, which selects a device to be monitored among the plurality of devices, an input circuit, which applies, based on input digital data, a first signal to the device to be monitored and an output circuit, which generates output digital data based on a second signal generated by the sensor circuit. The input circuit includes a digital-to-analog converter, and the output circuit includes an analog-to-digital converter.
Legal claims defining the scope of protection, as filed with the USPTO.
2. The monitoring circuit of claim 1, wherein the plurality of devices comprise at least one of an n-channel metal-oxide-semiconductor (NMOS) transistor, a p-channel metal-oxide-semiconductor (PMOS) transistor, or a resistor.
6. The monitoring circuit of claim 4, wherein a device farthest from the feedback amplifier among the plurality of devices is connected to the output terminal of the feedback amplifier to form a feedback loop.
8. The monitoring circuit of claim 7, wherein the current-to-voltage converter further comprises a first variable resistor configured to amplify a magnitude of the voltage signal.
9. The monitoring circuit of claim 8, further comprising a first comparator configured to output a variable resistance set signal based on the voltage signal and a first reference voltage as inputs.
12. The monitoring circuit of claim 1, further comprising a control circuit configured to store monitoring result data of the plurality of devices, based on the output digital data.
13. The monitoring circuit of claim 12, wherein the control circuit configured to compensate a supply voltage or a supply frequency, based on the monitoring result data.
14. The monitoring circuit of claim 1, further comprising a sub-monitoring circuit comprising a ring oscillator configured to monitor frequency performance of the plurality of devices.
16. The integrated circuit of claim 15, wherein the control circuit is configured to store monitoring result data of the plurality of devices, based on the output digital data.
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August 25, 2022
December 3, 2024
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